take one of your sentinels (probably the autocannon) out of your fast attack squad and put it in the slot for sentinels in your HQ.

This forces your opponent to almost double the amount of fire power they have to pour at your sentinels to stop them. if they have a single squad that has 4 shots that can damage a sentinel, and they shoot them at a squad of 3 sentinels then they have a chance to kill all 3 sentinels in one turn. on the other hand if you have 3 squads of a single sentinel, then that squad cannot kill more then 1 sentinel a turn.

combine this sort of distraction with leman russes/chimeras/hell hounds and your opponent may never be able to cope with the mass amounts of armoured targets.

"Thank him who puts me loath to this revenge on you who wrong me not for him who wrongd"